the servo don't standstill

[PRIOR666]

hello i have one cnc miller bdp interact1 mk2 with tnc151 control, its was working fine but suddenly the servomotor for the axis x can't standstill when reference ande the control send me "gross position error d", i change the cables from the drive to motors and i think that trouble is the drive i follow the manual instructions for calibration for the drive but i cant't to stabilize.
any suggestions?
thank you.

[mxtras]

Reduce your gain.

Scott

[PRIOR666]

thank you for the answer scott, but i try with the gain tach pot and the motor vibration diminishes but still exist i copy the values to calibration for the other axis and it applies them in x, but nothing

[machintek]

Any time I see an oscillation of an axis motor it has been a bad tach loop. This may be the tach on the motor, connectors, cable, or axis drive.

George

[PRIOR666]

thank you machintek, today i will continue making test on this points i still very confuse, i still thinking that the problem is the drive card.

[kreutz]

Originally Posted by PRIOR666 i change the cables from the drive to motors and i think that trouble is the drive i follow the manual instructions for calibration for the drive but i cant't to stabilize. any suggestions? thank you.

If you connected any other axis motor to that drive, tested, and the problem is still there => it is the drive.

[PRIOR666]

thank you for the suggestion, that test already made it and the problem moved at other axis so i think the drive is the problem, now i need to know if the drive can still be calibrate or if its damaged.

[kreutz]

Originally Posted by PRIOR666 thank you for the suggestion, that test already made it and the problem moved at other axis so i think the drive is the problem, now i need to know if the drive can still be calibrate or if its damaged.

I don't think it is a calibration issue, you can probably contact the manufacturer for guidance. It seems like an encoder interface problem.

[PRIOR666]

thank you, the problem is i dont know if the companie still support them.

[Al_The_Man]

Originally Posted by PRIOR666 thank you, the problem is i dont know if the companie still support them.

Are they the older Westamp drives? like these http://cnczone.com/forums/showthread...hlight=westamp
I usually replace these with modern AMC versions.
Al.

[PRIOR666]

Thank you Al_The _Man, but my drive is BOSCH D-6120 you have any information for this drive? attach a photo of my drive
thank you

[gus]

If you determine it is actually the drive, I have some tested good spares. Wil have to check the numbers, but look the same. Check what they cost to repair, I'm sure I'll sell one cheaper